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Foxface and Rabbitfish

Foxface and Rabbitfish

includes foxface and rabbitfish

Foxface and rabbitfish are peaceful, colourful fish that love to eat algae. They have venomous dorsal and anal fins that can deliver a painful sting. Care must be taken when handling these fish or maintaining an aquarium that contains them. Recommended for experienced marine aquarists.

Foxface and Rabbitfish

Foxface and Rabbitfish Facts

average adult size: 6 to 15 inches long, depending on species
average life span: depends on species
diet: omnivore
minimum aquarium size: 75+ gallons, depending on species
water temperature: 72-78°F
salinity level: 1.020-1.025


A well-balanced Foxface and Rabbitfish diet consists of:

  • Commercial algae or algae sheets
  • Marine flake or pelleted herbivore food
  • Mysis shrimp and brine shrimp (frozen)


Things to remember when feeding your foxface or rabbitfish:

  • Algae or algae sheets should always be present in the aquarium (attach to the side of the aquarium with a produce clip).
  • Feed other foods 1 to 2 times daily, no more than fish will eat in 1 to 2 minutes
  • Thaw frozen food before feeding.


  • Keep in an appropriate size aquarium; provide rock and decor for hiding places and plenty of room for movement.
  • Stable water quality and parameters are critical to the health of aquatic life. If you are unsure of your water quality, Petco provides free water testing.


  • Peaceful except when kept with another of its own species.
  • Reef safe when fed regularly; may nip at large polyp stony corals or soft corals.
  • Will consume nuisance algae along with desirable algae.
  • Known to control valonia algae.
  • Can be kept with larger and more aggressive fish due to its ability to defend itself with its venomous spines.

Habitat Maintenance

Daily: check filter, water temperature and other equipment.

Weekly: check water quality at least once a week

Monthly: change 10 to 25% of the total volume of water every 2 to 4 weeks, or as needed. Introduce new inhabitants to the aquarium gradually.


  • Compatible with dwarf and large angelfish, blennies, clownfish, damselfish, eels, gobies, groupers, hawkfish, lionfish, pseudochromis, puffers, tangs and wrasse.
  • Only keep one Foxface or Rabbitfish per aquarium.


Signs of a Healthy Fish

  • Clear eyes
  • Healthy appetite
  • Bright, even coloring
  • Fins completely intact and undamaged

Avoid overcrowded conditions; they are a major cause of stress and disease. Maintain good water quality with regular water changes and adequate filtration.

Red Flags

  • loss of color
  • spots or fungus on body or mouth
  • erratic swimming
  • labored breathing
  • cloudy eyes
  • weight loss

Common Health Issues

Health Issue Symptoms or Causes Suggested Action
Health Issue Fin rot Symptoms or Causes Frayed or disintegrating fins; the base of the fins usually reddens. Suggested Action Improve water quality; consult your aquatic veterinarian for treatment.
Health IssueMarine ich Symptoms or Causes Cysts on fins, gills, and skin; labored breathing, excess skin mucus or pale skin. Suggested ActionTreat entire aquarium with a commercial parasite remedy and improve water quality; freshwater dips can dislodge the parasites.


Ask a store partner about Petco's selection of books on foxface and rabbitfish and the variety of Petco Brand products available for the care and happiness of your new pet. All Petco Brand products carry a 100% money-back guarantee.

Because all aquatic life are potential carriers of infectious diseases, such as Atypical Mycobacterium and Salmonella, always wash your hands before and after handling your aquatic life or habitat contents to help prevent the potential spread of disease.

Pregnant women, children under the age of 5, senior citizens and people with weakened immune systems should contact their physician before purchasing or caring for aquatic life and should consider not having aquatic life as a pet.

Go to and for more information about aquatic life and disease.

This care sheet can cover the needs of other species.

Note:The information on this Care Sheet is not a substitute for veterinary care. If you need additional information, please refer to the sources on the following page or contact your veterinarian as appropriate.

Developed with and approved by a qualified veterinarian.